Climatological Report (Daily)
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000
CDUS43 KLOT 300631
CLIORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1231 AM CST FRI DEC 30 2016


...................................

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR DECEMBER 29 2016...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2016


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         35   1037 AM  63    1984  32      3       39
  MINIMUM         30    812 AM -15    1880  18     12       29
  AVERAGE         33                        25      8       34

PRECIPITATION (IN)
  YESTERDAY        T             0.78 1978   0.06  -0.06      T
  MONTH TO DATE    1.77                      2.13  -0.36     4.78
  SINCE DEC 1      1.77                      2.13  -0.36     4.78
  SINCE JAN 1     35.97                     36.77  -0.80    39.76

SNOWFALL (IN)
  YESTERDAY        T             5.8  2000   0.4   -0.4       T
  MONTH TO DATE   17.7                       7.6   10.1      3.4
  SINCE DEC 1     17.7                       7.6   10.1      3.4
  SINCE JUL 1     17.7                       9.0    8.7     14.6
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       32                        40     -8       31
  MONTH TO DATE 1164                      1073     91      723
  SINCE DEC 1   1164                      1073     91      723
  SINCE JUL 1   1993                      2329   -336     1696

 COOLING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE    0                         0      0        0
  SINCE DEC 1      0                         0      0        0
  SINCE JAN 1   1157                       843    314      806
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    26   HIGHEST WIND DIRECTION     W (290)
  HIGHEST GUST SPEED    35   HIGHEST GUST DIRECTION     W (290)
  AVERAGE WIND SPEED    17.6


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.6


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  LIGHT SNOW


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    78           500 AM
 LOWEST     59          1000 PM
 AVERAGE    69

..........................................................


THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   32        61      1884
 MINIMUM TEMPERATURE (F)   18        -7      1909


SUNRISE AND SUNSET
DECEMBER 30 2016......SUNRISE   719 AM CST   SUNSET   430 PM CST
DECEMBER 31 2016......SUNRISE   720 AM CST   SUNSET   430 PM CST


-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.




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